6445782133 has 8 divisors (see below), whose sum is σ = 7398226368. Its totient is φ = 5501242464.

The previous prime is 6445782107. The next prime is 6445782137. The reversal of 6445782133 is 3312875446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6445782133 - 2⁹ = 6445781621 is a prime.

It is a super-2 number, since 2×6445782133² = 83096214612204059378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6445782133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445782137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1974391 + ... + 1977652.

It is an arithmetic number, because the mean of its divisors is an integer number (924778296).

Almost surely, 2^6445782133 is an apocalyptic number.

It is an amenable number.

6445782133 is a deficient number, since it is larger than the sum of its proper divisors (952444235).

6445782133 is a wasteful number, since it uses less digits than its factorization.

6445782133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3952283.

The product of its digits is 483840, while the sum is 43.

The square root of 6445782133 is about 80285.6284337365. The cubic root of 6445782133 is about 1861.0521403995.

The spelling of 6445782133 in words is "six billion, four hundred forty-five million, seven hundred eighty-two thousand, one hundred thirty-three".